US5526294A - Capacitive touch entry apparatus using drive pulse signals of different phases - Google Patents
Capacitive touch entry apparatus using drive pulse signals of different phases Download PDFInfo
- Publication number
- US5526294A US5526294A US07/515,877 US51587790A US5526294A US 5526294 A US5526294 A US 5526294A US 51587790 A US51587790 A US 51587790A US 5526294 A US5526294 A US 5526294A
- Authority
- US
- United States
- Prior art keywords
- signal
- key input
- electrodes
- input electrodes
- base
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
- H03K17/96—Touch switches
- H03K17/962—Capacitive touch switches
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K2217/00—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00
- H03K2217/94—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00 characterised by the way in which the control signal is generated
- H03K2217/96—Touch switches
- H03K2217/9607—Capacitive touch switches
- H03K2217/960755—Constructional details of capacitive touch and proximity switches
- H03K2217/96077—Constructional details of capacitive touch and proximity switches comprising an electrode which is floating
Landscapes
- Electronic Switches (AREA)
- Switches That Are Operated By Magnetic Or Electric Fields (AREA)
- Push-Button Switches (AREA)
Abstract
Description
Claims (6)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1-109387 | 1989-04-28 | ||
JP1109387A JP2733300B2 (en) | 1989-04-28 | 1989-04-28 | Key input device |
Publications (1)
Publication Number | Publication Date |
---|---|
US5526294A true US5526294A (en) | 1996-06-11 |
Family
ID=14508945
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US07/515,877 Expired - Fee Related US5526294A (en) | 1989-04-28 | 1990-04-27 | Capacitive touch entry apparatus using drive pulse signals of different phases |
Country Status (2)
Country | Link |
---|---|
US (1) | US5526294A (en) |
JP (1) | JP2733300B2 (en) |
Cited By (60)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5760715A (en) * | 1996-04-15 | 1998-06-02 | Pressenk Instruments Inc. | Padless touch sensor |
US6320282B1 (en) | 1999-01-19 | 2001-11-20 | Touchsensor Technologies, Llc | Touch switch with integral control circuit |
US20030182215A1 (en) * | 2002-03-20 | 2003-09-25 | Peter Ringler | Network-enabled method and system for asset finance |
WO2005041130A3 (en) * | 2003-10-29 | 2005-06-30 | Aisin Seiki | Human body detecting device for vehicles |
US20050162389A1 (en) * | 2002-04-12 | 2005-07-28 | Obermeyer Henry K. | Multi-axis joystick and transducer means therefore |
US20060158041A1 (en) * | 1999-01-19 | 2006-07-20 | Caldwell David W | Touch switches and practical applications therefor |
DE102006001666A1 (en) * | 2006-01-12 | 2007-08-16 | Ident Technology Ag | Method and control system for closing flaps |
US20090260897A1 (en) * | 2008-04-16 | 2009-10-22 | Infocus Corporation | Capacitive touch sensor |
US20100045614A1 (en) * | 2008-08-21 | 2010-02-25 | Wacom Co., Ltd. | Extended Touchscreen Pattern |
US20100045615A1 (en) * | 2008-08-21 | 2010-02-25 | Wacom Co., Ltd. | Meshed touchscreen pattern |
US20100059295A1 (en) * | 2008-09-10 | 2010-03-11 | Apple Inc. | Single-chip multi-stimulus sensor controller |
US20100060591A1 (en) * | 2008-09-10 | 2010-03-11 | Marduke Yousefpor | Multiple Stimulation Phase Determination |
US20100073323A1 (en) * | 2008-09-24 | 2010-03-25 | Geaghan Bernard O | Mutual capacitance measuring circuits and methods |
US20100096193A1 (en) * | 2008-10-22 | 2010-04-22 | Esat Yilmaz | Capacitive touch sensors |
US20100149110A1 (en) * | 2008-12-12 | 2010-06-17 | Wacom Co., Ltd. | Architecture and method for multi-aspect touchscreen scanning |
US20100230180A1 (en) * | 2007-10-10 | 2010-09-16 | Kazuto Yamauchi | Capacitance change detection circuit, touch panel and determination method |
US20100300773A1 (en) * | 2009-05-29 | 2010-12-02 | 3M Innovative Properties Company | High speed multi-touch touch device and controller therefor |
US20110036164A1 (en) * | 2009-07-27 | 2011-02-17 | Touchsensor Technologies, Llc | Level sensing controller and method |
US20110063249A1 (en) * | 2009-09-14 | 2011-03-17 | Raydium Semiconductor Corporation | Touch sensing apparatus and touch sensing method |
US20110084857A1 (en) * | 2009-10-08 | 2011-04-14 | 3M Innovative Properties Company | Multi-touch touch device with multiple drive frequencies and maximum likelihood estimation |
US20110128154A1 (en) * | 2009-12-01 | 2011-06-02 | Flow-Rite Controls, Ltd. | Battery electrolyte level indicator |
US20110163992A1 (en) * | 2010-01-05 | 2011-07-07 | 3M Innovative Properties Company | High speed noise tolerant multi-touch touch device and controller therefor |
US20110304576A1 (en) * | 2008-11-18 | 2011-12-15 | Peter Fasshauer | Capacitative sensor system |
US8493358B2 (en) | 2010-05-25 | 2013-07-23 | 3M Innovative Properties Company | High speed low power multi-touch touch device and controller therefor |
US20130271182A1 (en) * | 2012-04-11 | 2013-10-17 | Ford Global Technologies, Llc | Proximity switch assembly and activation method using rate monitoring |
US8624871B2 (en) | 2011-07-15 | 2014-01-07 | Texas Instruments Incorporated | Method and apparatus for sensing and scanning a capacitive touch panel |
US8773366B2 (en) | 2009-11-16 | 2014-07-08 | 3M Innovative Properties Company | Touch sensitive device using threshold voltage signal |
US8791920B2 (en) | 2008-09-10 | 2014-07-29 | Apple Inc. | Phase compensation for multi-stimulus controller |
US20140210257A1 (en) * | 2012-04-11 | 2014-07-31 | Ford Global Technologies, Llc | Proximity switch assembly and method of tuning same |
US8890841B2 (en) | 2013-03-13 | 2014-11-18 | 3M Innovative Properties Company | Capacitive-based touch apparatus and method therefor, with reduced interference |
TWI475454B (en) * | 2012-04-27 | 2015-03-01 | Brite Semiconductor Hong Kong Ltd | Self capacitance touch apparatus and operation method thereof |
US8988390B1 (en) | 2013-07-03 | 2015-03-24 | Apple Inc. | Frequency agile touch processing |
US9184745B2 (en) | 2012-04-11 | 2015-11-10 | Ford Global Technologies, Llc | Proximity switch assembly and method of sensing user input based on signal rate of change |
US9235280B1 (en) * | 2012-05-24 | 2016-01-12 | Qualcomm Technologies, Inc. | Mutual capacitance large panel phase shift mitigation |
US20160064166A1 (en) * | 2014-08-27 | 2016-03-03 | Continental Automotive Systems, Inc. | Switch with user feedback |
US9287864B2 (en) | 2012-04-11 | 2016-03-15 | Ford Global Technologies, Llc | Proximity switch assembly and calibration method therefor |
US9311204B2 (en) | 2013-03-13 | 2016-04-12 | Ford Global Technologies, Llc | Proximity interface development system having replicator and method |
US9337832B2 (en) | 2012-06-06 | 2016-05-10 | Ford Global Technologies, Llc | Proximity switch and method of adjusting sensitivity therefor |
US9348451B2 (en) | 2008-09-10 | 2016-05-24 | Apple Inc. | Channel scan architecture for multiple stimulus multi-touch sensor panels |
US9348477B2 (en) | 2005-11-15 | 2016-05-24 | Synaptics Incorporated | Methods and systems for detecting a position-based attribute of an object using digital codes |
US9389724B2 (en) | 2010-09-09 | 2016-07-12 | 3M Innovative Properties Company | Touch sensitive device with stylus support |
US9447613B2 (en) | 2012-09-11 | 2016-09-20 | Ford Global Technologies, Llc | Proximity switch based door latch release |
US9520875B2 (en) | 2012-04-11 | 2016-12-13 | Ford Global Technologies, Llc | Pliable proximity switch assembly and activation method |
US9531379B2 (en) | 2012-04-11 | 2016-12-27 | Ford Global Technologies, Llc | Proximity switch assembly having groove between adjacent proximity sensors |
US9548733B2 (en) | 2015-05-20 | 2017-01-17 | Ford Global Technologies, Llc | Proximity sensor assembly having interleaved electrode configuration |
US9559688B2 (en) | 2012-04-11 | 2017-01-31 | Ford Global Technologies, Llc | Proximity switch assembly having pliable surface and depression |
US9568527B2 (en) | 2012-04-11 | 2017-02-14 | Ford Global Technologies, Llc | Proximity switch assembly and activation method having virtual button mode |
EP1211649B2 (en) † | 2000-12-01 | 2017-03-01 | Valeo Comfort and Driving Assistance | Vehicle door handle comprising a proximity sensor and a tactile sensor cooperating with a hand-free access system |
US9654103B2 (en) | 2015-03-18 | 2017-05-16 | Ford Global Technologies, Llc | Proximity switch assembly having haptic feedback and method |
US9660644B2 (en) | 2012-04-11 | 2017-05-23 | Ford Global Technologies, Llc | Proximity switch assembly and activation method |
US9823785B2 (en) | 2010-09-09 | 2017-11-21 | 3M Innovative Properties Company | Touch sensitive device with stylus support |
US9944237B2 (en) | 2012-04-11 | 2018-04-17 | Ford Global Technologies, Llc | Proximity switch assembly with signal drift rejection and method |
US9990084B2 (en) | 2007-06-13 | 2018-06-05 | Apple Inc. | Touch detection using multiple simultaneous stimulation signals |
US10019119B2 (en) | 2010-09-09 | 2018-07-10 | 3M Innovative Properties Company | Touch sensitive device with stylus support |
US10038443B2 (en) | 2014-10-20 | 2018-07-31 | Ford Global Technologies, Llc | Directional proximity switch assembly |
US10112556B2 (en) | 2011-11-03 | 2018-10-30 | Ford Global Technologies, Llc | Proximity switch having wrong touch adaptive learning and method |
US10466195B2 (en) | 2017-03-14 | 2019-11-05 | Ford Global Technologies, Llc | Vehicle window having moisture sensor |
US10871850B2 (en) | 2007-01-03 | 2020-12-22 | Apple Inc. | Simultaneous sensing arrangement |
US11338851B2 (en) | 2017-09-07 | 2022-05-24 | Ford Global Technologies, Llc | Hitch assist system featuring trailer location identification |
GB2623545A (en) * | 2022-10-19 | 2024-04-24 | Touchnetix Ltd | Touch-sensitive apparatus and method |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4009953B2 (en) | 2003-05-14 | 2007-11-21 | オムロン株式会社 | Object detection sensor |
JP2009289753A (en) * | 2009-08-07 | 2009-12-10 | Toshiba Corp | Cooking device |
Citations (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3668697A (en) * | 1970-09-24 | 1972-06-06 | Hewlett Packard Co | Noncontacting keyboard |
US3921166A (en) * | 1972-09-15 | 1975-11-18 | Raytheon Co | Capacitance matrix keyboard |
US4233522A (en) * | 1978-10-30 | 1980-11-11 | General Electric Company | Capacitive touch switch array |
US4237421A (en) * | 1978-10-19 | 1980-12-02 | General Electric Company | Single-electrode capacitance touchpad sensor systems |
US4290052A (en) * | 1979-10-26 | 1981-09-15 | General Electric Company | Capacitive touch entry apparatus having high degree of personal safety |
US4290061A (en) * | 1979-08-23 | 1981-09-15 | General Electric Company | Electrically integrated touch input and output display system |
US4291303A (en) * | 1979-08-23 | 1981-09-22 | General Electric Company | Touch pad and display tube circuitry |
SU868739A1 (en) * | 1979-12-27 | 1981-09-30 | Предприятие П/Я Р-6886 | Information input device |
US4305135A (en) * | 1979-07-30 | 1981-12-08 | International Business Machines Corp. | Program controlled capacitive keyboard variable threshold sensing system |
US4359720A (en) * | 1981-04-29 | 1982-11-16 | Honeywell Inc. | Environmentally sealed variable capacitance apparatus |
US4413252A (en) * | 1980-01-23 | 1983-11-01 | Robertshaw Controls Company | Capacitive switch and panel |
EP0094130A2 (en) * | 1982-05-07 | 1983-11-16 | Philips Electronics Uk Limited | Data entry keyboard apparatus |
US4543564A (en) * | 1981-04-03 | 1985-09-24 | Commissariat A L'energie Atomique | Interference suppression apparatus for a capacitive keyboard |
US4561002A (en) * | 1982-08-30 | 1985-12-24 | General Electric Company | Capacitive touch switch arrangement |
EP0187021A2 (en) * | 1984-12-24 | 1986-07-09 | AT&T Corp. | Method and apparatus for capacitive keyboard scanning |
EP0248712A1 (en) * | 1986-06-02 | 1987-12-09 | Electronique Serge Dassault | Security keyboard unit, in particular for the composition of a confidential code |
US4728932A (en) * | 1986-07-25 | 1988-03-01 | Honeywell Inc. | Detector for capacitive sensing devices |
US4733222A (en) * | 1983-12-27 | 1988-03-22 | Integrated Touch Arrays, Inc. | Capacitance-variation-sensitive touch sensing array system |
US4806846A (en) * | 1987-07-06 | 1989-02-21 | Kerber George L | High accuracy direct reading capacitance-to-voltage converter |
US5053757A (en) * | 1987-06-04 | 1991-10-01 | Tektronix, Inc. | Touch panel with adaptive noise reduction |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59119630A (en) * | 1982-12-27 | 1984-07-10 | カシオ計算機株式会社 | Touch switch unit |
JPS6064287A (en) * | 1983-09-19 | 1985-04-12 | Sensaa Gijutsu Kenkyusho:Kk | Proximity sensor with mutual interference preventive apparatus |
JPS625537U (en) * | 1985-06-27 | 1987-01-13 |
-
1989
- 1989-04-28 JP JP1109387A patent/JP2733300B2/en not_active Expired - Fee Related
-
1990
- 1990-04-27 US US07/515,877 patent/US5526294A/en not_active Expired - Fee Related
Patent Citations (20)
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---|---|---|---|---|
US3668697A (en) * | 1970-09-24 | 1972-06-06 | Hewlett Packard Co | Noncontacting keyboard |
US3921166A (en) * | 1972-09-15 | 1975-11-18 | Raytheon Co | Capacitance matrix keyboard |
US4237421A (en) * | 1978-10-19 | 1980-12-02 | General Electric Company | Single-electrode capacitance touchpad sensor systems |
US4233522A (en) * | 1978-10-30 | 1980-11-11 | General Electric Company | Capacitive touch switch array |
US4305135A (en) * | 1979-07-30 | 1981-12-08 | International Business Machines Corp. | Program controlled capacitive keyboard variable threshold sensing system |
US4290061A (en) * | 1979-08-23 | 1981-09-15 | General Electric Company | Electrically integrated touch input and output display system |
US4291303A (en) * | 1979-08-23 | 1981-09-22 | General Electric Company | Touch pad and display tube circuitry |
US4290052A (en) * | 1979-10-26 | 1981-09-15 | General Electric Company | Capacitive touch entry apparatus having high degree of personal safety |
SU868739A1 (en) * | 1979-12-27 | 1981-09-30 | Предприятие П/Я Р-6886 | Information input device |
US4413252A (en) * | 1980-01-23 | 1983-11-01 | Robertshaw Controls Company | Capacitive switch and panel |
US4543564A (en) * | 1981-04-03 | 1985-09-24 | Commissariat A L'energie Atomique | Interference suppression apparatus for a capacitive keyboard |
US4359720A (en) * | 1981-04-29 | 1982-11-16 | Honeywell Inc. | Environmentally sealed variable capacitance apparatus |
EP0094130A2 (en) * | 1982-05-07 | 1983-11-16 | Philips Electronics Uk Limited | Data entry keyboard apparatus |
US4561002A (en) * | 1982-08-30 | 1985-12-24 | General Electric Company | Capacitive touch switch arrangement |
US4733222A (en) * | 1983-12-27 | 1988-03-22 | Integrated Touch Arrays, Inc. | Capacitance-variation-sensitive touch sensing array system |
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EP0248712A1 (en) * | 1986-06-02 | 1987-12-09 | Electronique Serge Dassault | Security keyboard unit, in particular for the composition of a confidential code |
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Cited By (101)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5760715A (en) * | 1996-04-15 | 1998-06-02 | Pressenk Instruments Inc. | Padless touch sensor |
US6713897B2 (en) | 1999-01-19 | 2004-03-30 | Touchsensor Technologies, Llc | Touch switch with integral control circuit |
US9306561B2 (en) | 1999-01-19 | 2016-04-05 | Touchsensor Technologies, Llc | Touch switches and practical applications therefor |
US7906875B2 (en) | 1999-01-19 | 2011-03-15 | Touchsensor Technologies, Llc | Touch switches and practical applications therefor |
US20060158041A1 (en) * | 1999-01-19 | 2006-07-20 | Caldwell David W | Touch switches and practical applications therefor |
US20110133815A1 (en) * | 1999-01-19 | 2011-06-09 | Touchsensor Technologies, Llc | Touch switches and practical applications therefor |
US8227940B2 (en) | 1999-01-19 | 2012-07-24 | Touchsensor Technologies, Llc | Touch switches and practical applications therefor |
US6320282B1 (en) | 1999-01-19 | 2001-11-20 | Touchsensor Technologies, Llc | Touch switch with integral control circuit |
EP1211649B2 (en) † | 2000-12-01 | 2017-03-01 | Valeo Comfort and Driving Assistance | Vehicle door handle comprising a proximity sensor and a tactile sensor cooperating with a hand-free access system |
US20030182215A1 (en) * | 2002-03-20 | 2003-09-25 | Peter Ringler | Network-enabled method and system for asset finance |
US20050162389A1 (en) * | 2002-04-12 | 2005-07-28 | Obermeyer Henry K. | Multi-axis joystick and transducer means therefore |
US20090213073A1 (en) * | 2002-04-12 | 2009-08-27 | Obermeyer Henry K | Multi-Axis Joystick and Transducer Means Therefore |
US7474296B2 (en) | 2002-04-12 | 2009-01-06 | Obermeyer Henry K | Multi-axis joystick and transducer means therefore |
US8816962B2 (en) | 2002-04-12 | 2014-08-26 | Henry K. Obermeyer | Multi-axis input apparatus |
US8094121B2 (en) | 2002-04-12 | 2012-01-10 | Henry K. Obermeyer | Multi-axis joystick and transducer means therefore |
WO2005041130A3 (en) * | 2003-10-29 | 2005-06-30 | Aisin Seiki | Human body detecting device for vehicles |
US7598753B2 (en) | 2003-10-29 | 2009-10-06 | Aisin Seiki Kabushiki Kaisha | Human body detecting device for vehicles |
KR100800374B1 (en) * | 2003-10-29 | 2008-02-04 | 아이신세이끼가부시끼가이샤 | Human body detecting device for vehicles |
US20070096905A1 (en) * | 2003-10-29 | 2007-05-03 | Aisin Seiki Kabushiki Kaisha | Human body detecting device for vehicles |
US9348477B2 (en) | 2005-11-15 | 2016-05-24 | Synaptics Incorporated | Methods and systems for detecting a position-based attribute of an object using digital codes |
US9696863B2 (en) | 2005-11-15 | 2017-07-04 | Synaptics Incorporated | Methods and systems for detecting a position-based attribute of an object using digital codes |
DE102006001666A1 (en) * | 2006-01-12 | 2007-08-16 | Ident Technology Ag | Method and control system for closing flaps |
US10871850B2 (en) | 2007-01-03 | 2020-12-22 | Apple Inc. | Simultaneous sensing arrangement |
US11675454B2 (en) | 2007-01-03 | 2023-06-13 | Apple Inc. | Simultaneous sensing arrangement |
US10747355B2 (en) | 2007-06-13 | 2020-08-18 | Apple Inc. | Touch detection using multiple simultaneous stimulation signals |
US9990084B2 (en) | 2007-06-13 | 2018-06-05 | Apple Inc. | Touch detection using multiple simultaneous stimulation signals |
US11775109B2 (en) | 2007-06-13 | 2023-10-03 | Apple Inc. | Touch detection using multiple simultaneous stimulation signals |
US11106308B2 (en) | 2007-06-13 | 2021-08-31 | Apple Inc. | Touch detection using multiple simultaneous stimulation signals |
DE112008002731B4 (en) * | 2007-10-10 | 2014-07-10 | Mitsubishi Jidosha Kogyo K.K. | Capacity change detection circuit, touch panel and determination method |
US20100230180A1 (en) * | 2007-10-10 | 2010-09-16 | Kazuto Yamauchi | Capacitance change detection circuit, touch panel and determination method |
US20090260897A1 (en) * | 2008-04-16 | 2009-10-22 | Infocus Corporation | Capacitive touch sensor |
US20100045615A1 (en) * | 2008-08-21 | 2010-02-25 | Wacom Co., Ltd. | Meshed touchscreen pattern |
US8711105B2 (en) | 2008-08-21 | 2014-04-29 | Wacom Co., Ltd. | Touchscreen with extended conductive pattern |
US20100045614A1 (en) * | 2008-08-21 | 2010-02-25 | Wacom Co., Ltd. | Extended Touchscreen Pattern |
US8159467B2 (en) | 2008-08-21 | 2012-04-17 | Wacom Co. Ltd. | Meshed touchscreen pattern |
US8791920B2 (en) | 2008-09-10 | 2014-07-29 | Apple Inc. | Phase compensation for multi-stimulus controller |
US9715306B2 (en) | 2008-09-10 | 2017-07-25 | Apple Inc. | Single chip multi-stimulus sensor controller |
US10042476B2 (en) | 2008-09-10 | 2018-08-07 | Apple Inc. | Channel scan architecture for multiple stimulus multi-touch sensor panels |
US8593423B2 (en) | 2008-09-10 | 2013-11-26 | Apple Inc. | Single chip multi-stimulus sensor controller |
US8592697B2 (en) | 2008-09-10 | 2013-11-26 | Apple Inc. | Single-chip multi-stimulus sensor controller |
US9348451B2 (en) | 2008-09-10 | 2016-05-24 | Apple Inc. | Channel scan architecture for multiple stimulus multi-touch sensor panels |
US10042472B2 (en) | 2008-09-10 | 2018-08-07 | Apple Inc. | Single-chip multi-stimulus sensor controller |
US9483141B2 (en) | 2008-09-10 | 2016-11-01 | Apple Inc. | Single-chip multi-stimulus sensor controller |
US20100059295A1 (en) * | 2008-09-10 | 2010-03-11 | Apple Inc. | Single-chip multi-stimulus sensor controller |
US9086750B2 (en) | 2008-09-10 | 2015-07-21 | Apple Inc. | Phase compensation for multi-stimulus controller |
US9069408B2 (en) | 2008-09-10 | 2015-06-30 | Apple Inc. | Single-chip multi-stimulus sensor controller |
US9606663B2 (en) * | 2008-09-10 | 2017-03-28 | Apple Inc. | Multiple stimulation phase determination |
US20100060591A1 (en) * | 2008-09-10 | 2010-03-11 | Marduke Yousefpor | Multiple Stimulation Phase Determination |
US20100073323A1 (en) * | 2008-09-24 | 2010-03-25 | Geaghan Bernard O | Mutual capacitance measuring circuits and methods |
US8363031B2 (en) | 2008-09-24 | 2013-01-29 | 3M Innovative Properties Company | Mutual capacitance measuring circuits and methods |
US8937611B2 (en) | 2008-10-22 | 2015-01-20 | Atmel Corporation | Capacitive touch sensors |
US20100096193A1 (en) * | 2008-10-22 | 2010-04-22 | Esat Yilmaz | Capacitive touch sensors |
US8610009B2 (en) * | 2008-10-22 | 2013-12-17 | Atmel Corporation | Capacitive touch sensors |
US10003334B2 (en) * | 2008-11-18 | 2018-06-19 | Microchip Technology Germany Gmbh | Capacitative sensor system |
US20110304576A1 (en) * | 2008-11-18 | 2011-12-15 | Peter Fasshauer | Capacitative sensor system |
US20100149110A1 (en) * | 2008-12-12 | 2010-06-17 | Wacom Co., Ltd. | Architecture and method for multi-aspect touchscreen scanning |
US8711121B2 (en) | 2008-12-12 | 2014-04-29 | Wacom Co., Ltd. | Architecture and method for multi-aspect touchscreen scanning |
US20100300773A1 (en) * | 2009-05-29 | 2010-12-02 | 3M Innovative Properties Company | High speed multi-touch touch device and controller therefor |
US9417739B2 (en) | 2009-05-29 | 2016-08-16 | 3M Innovative Properties Company | High speed multi-touch touch device and controller therefor |
US20110036164A1 (en) * | 2009-07-27 | 2011-02-17 | Touchsensor Technologies, Llc | Level sensing controller and method |
US20110063249A1 (en) * | 2009-09-14 | 2011-03-17 | Raydium Semiconductor Corporation | Touch sensing apparatus and touch sensing method |
US9753586B2 (en) * | 2009-10-08 | 2017-09-05 | 3M Innovative Properties Company | Multi-touch touch device with multiple drive frequencies and maximum likelihood estimation |
US20110084857A1 (en) * | 2009-10-08 | 2011-04-14 | 3M Innovative Properties Company | Multi-touch touch device with multiple drive frequencies and maximum likelihood estimation |
US8773366B2 (en) | 2009-11-16 | 2014-07-08 | 3M Innovative Properties Company | Touch sensitive device using threshold voltage signal |
US20110128154A1 (en) * | 2009-12-01 | 2011-06-02 | Flow-Rite Controls, Ltd. | Battery electrolyte level indicator |
US20110163992A1 (en) * | 2010-01-05 | 2011-07-07 | 3M Innovative Properties Company | High speed noise tolerant multi-touch touch device and controller therefor |
US8411066B2 (en) | 2010-01-05 | 2013-04-02 | 3M Innovative Properties Company | High speed noise tolerant multi-touch touch device and controller therefor |
US8493358B2 (en) | 2010-05-25 | 2013-07-23 | 3M Innovative Properties Company | High speed low power multi-touch touch device and controller therefor |
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Also Published As
Publication number | Publication date |
---|---|
JP2733300B2 (en) | 1998-03-30 |
JPH02288122A (en) | 1990-11-28 |
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